4 papers
Generalised Non-Linear Electrodynamics: classical picture and effective mass generation
Abedennour Dib, José A. Helayël-Neto, Alessandro D. A. M. Spallicci
Starting from a generic Lagrangian, we discuss the number of propagating degrees of freedom in the framework of generalised non-linear electrodynamics when a photon-background spli…
LQG-modified dispersion relations and the problem of cosmic photons threshold anomalies
P. A. L. Mourão, G. L. L. W. Levy, J. A. Helayël-Neto
Our present contribution sets out to investigate how combined effects of Lorentz invariance violation (LIV) and loop quantum gravity (LQG)-modified photon dispersion relations affe…
Re-assessing special aspects of Dirac fermions in presence of Lorentz-symmetry violation
João Paulo S. Melo, José A. Helayël-Neto
This paper focuses on additional inspections concerning the fermionic sector of the Standard Model Extension (SME). In this context, our main effort in this contribution is to inve…
Testing the Ampère-Maxwell law on the photon mass and Lorentz-Poincaré symmetry violation with MMS multi-spacecraft data
Alessandro D. A. M. Spallicci, Giuseppe Sarracino, Orélien Randriamboarison +2
We investigate possible evidence from Extended Theories of Electro-Magnetism by looking for deviations from the Ampère-Maxwell law. The photon, main messenger for interpreting the…